Building a Simple Cobblestone Generator – A Step-by-Step Guide

how to make cobblestone generator


Cobblestone generators are essential devices in the world of Minecraft, as they provide an infinite supply of cobblestone, a versatile building material. Whether you’re a novice player or a seasoned pro, learning how to make a cobblestone generator is a valuable skill. In this article, we’ll guide you through the process of creating a basic, efficient cobblestone generator in Minecraft. With a few simple materials and steps, you’ll have a consistent source of cobblestone to fuel your construction and crafting projects.

Materials Needed

To build a cobblestone generator, you’ll need the following materials

1. A water source block (a bucket of water or ice block)

2. A lava source block (a bucket of lava or a naturally occurring lava pool)

3. A building block (preferably non-flammable, like stone or obsidian)

4. A bucket for collecting cobblestone.

5. A pickaxe to mine the cobblestone.

Choose a Location

The first step in creating a cobblestone generator is choosing the right location. Find an open space or dig out an area, leaving a space of at least 3×3 blocks. Make sure you’re in a safe environment, as working with lava can be dangerous. It’s best to build your generator on solid ground, as it prevents potential accidents.

Create a Water Flow 

Once you’ve cleared the area, place your water source block at one end of the 3×3 area. It’s essential to make sure that the water can flow without any obstructions. The water should flow towards the centre of the 3×3 area, creating a flowing channel.

Build a Trough

In the centre of the 3×3 area, create a trough using your building blocks. This trough should be one block wide and two blocks long, allowing the water to flow into it. The trough’s purpose is to guide the water towards the lava source, ensuring that the cobblestone will be generated.

Add the Lava Source 

Place the lava source block at the opposite end of the 3×3 area from the water source. Make sure the lava source is at the same level as the trough, and that it does not touch the water directly. This is crucial to prevent the lava from turning into obsidian when it comes into contact with water.

Collect the Cobblestone 

Now that your cobblestone generator is set up, it’s time to start collecting cobblestone. Stand at the end of the trough, opposite the water source, and use your pickaxe to mine the cobblestone that forms in the trough. As the water flows over the lava source, it will turn into cobblestone, which you can collect and add to your inventory.

Automate the Process 

To make your cobblestone generator even more efficient, consider adding hoppers and chests to collect cobblestone automatically. Place hoppers beneath the trough to catch the cobblestone, and connect them to a chest. This way, you can continue mining cobblestone while the hoppers and chest collect it for you.


How do you make a cobblestone generator without mining?

Pistons can be used to automate cobblestone generation and reduce the amount of cobblestone lost. Piston cobblestone generators work on the same principle as standard generators, but rather than mining, a piston pushes the fresh stone out of the way, allowing the streams to touch once again.

Why can’t I mine cobblestone?

Cobblestone can be mined using a pickaxe, in which case it drops itself. If mined without a pickaxe, it drops nothing. Its hardness is greater than stone so it requires more time to break, especially with anything other than a pickaxe.


Building a cobblestone generator is a fundamental skill for Minecraft players. With a few simple steps and basic materials, you can create an infinite source of cobblestone for your construction and crafting needs. Remember to be cautious when working with lava and ensure your safety throughout the process. Happy crafting!

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